height=float(input('请输入身高:'))
weight=float(input('请输入体重:'))
BIM=weight/(height*height)
print(BIM)
if BIM<18.5:
    print('过轻')
elif BIM>=18.5 and BIM<25:
    print('正常')
elif BIM>=25 and BIM<28:
    print('过重')
elif BIM>=28 and BIM<32:
    print('肥胖')
elif BIM>32:
    print('严重肥胖')